what is the difference?

[thelocal17]

I am looking into getting a 1/18 scale truck and I am seeing a RC18MT, and RC18T2. What is the difference, Brushed and brushless I can't figure it out.

 

[hamz9561]

The -T2 is a newer version of the platform that is more like a truggy. It is belt driven and has a factory brushless option. The -MT is on the older shaft driven platform.

 

[thelocal17]

a guy is selling the older version with a mamba system in it would that be a good buy for around 115 or is the older version just junk?

 

[hamz9561]

No. I have the original 18t with a Mamba Micro Pro and a 6800kV motor. The older versions tended to eat drive-line parts with brushless/LiPo combination. I blew several diffs and twisted the stock and the Factory Team upgrades beyond use. I upgraded to MIP and b=never really had anymore issues.

 

[benlinus]

A Brushed Motor has a rotating set of wound wire coils(armature) which acts as an electromagnet with two poles. A mechanical rotary switch(commutator) reverses the direction of the electric current twice every cycle, to flow through the armature so that the poles of the electromagnet push and pull against the permanent magnets on the outside of the motor. As the poles of the armature electromagnet pass the poles of the permanent magnets, the commutator reverses the polarity of the armature electromagnet. During the instant of switching polarity, inertia keeps the motor going in the proper direction.

A Brushless Motor uses a permanent magnet external rotor, three phases of driving coils, one or more devices to sense the position of the rotor, and the associated drive electronics. The coils are activated, one phase after the other, by the electronic speed controller as cued by the signals from the rotor position sensors.